Microframe Corporation PRX4SERL Operating instructions

Brand: Microframe Corporation

Model: PRX4SERL

Type: Operating instructions

PRX4SERL

Four Zone Receiver Decoder

Operating Manual

Microframe Corporation

604 S. 12th Street

Broken Arrow, OK 74012

Tel: (918) 258-4839

Toll Free: 1-800-635-3811

Website: www.microframecorp.com

E-mail: [email protected]

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Limited Warranty Agreement

Your Microframe system is warranted against

failure due to defects in workmanship or

material for a period of one (1) year from the date

of purchase. Microframe Corporation will repair

or replace any defective unit. Obvious abuse or

mishandling of the unit is NOT covered by this

warranty.

Merchandise Return

If your unit does not work satisfactorily,

please give us a call. We may be able to solve the

problem by telephone. If it becomes necessary to

return your Unit to the factory, please observe

the following:

1. Place unit in a sturdy box with sufficient

packing material.

2. If requested, include the power supply. It is

not necessary to return the cable and connectors

unless they are the problem.

3. Return the system insured and prepaid

since we are not responsible for shipping

damages and losses on returned units.

Warranty Service

For warranty service, please contact

Microframe Corporation at 1-800-635-3811.

technician will gladly assist you.

Assistance

For any product assistance or maintenance

help, contact Microframe Corporation

telephone at 1-800-635-3811 or by e-mail at

[email protected].

Safety

Do not install substitute parts or perform any

modification to the product without first

contacting Microframe Corporation.

Warning

All power transformers, line cords,

and

electrical equipment should be kept out of the

reach of children and away from water. (If you

are installing cable in an air plenum area, such

as a drop ceiling used for air return, you must

use plenum-rated cable. The cable supplied from

Microframe is rated CL2 and is approved for

installation everywhere indoors except plenum

areas.)

Life Support Policy

Microframe's products are not

authorized for use as components in life

support devices or systems without the

express written approval of the president

of Microframe Corporation. As used herein:

1. Life support devices or systems are defined

as systems which support or sustain life, and

whose failure to perform when properly used in

accordance with instructions for use provided in

the labeling, can be

reasonably expected to result

in a significant injury to the user or any one

depending on the system.

2. A critical component is any component of a

life support device or system whose failure to

perform can be reasonably expected to cause the

failure of the life support device or system, or to

affect its safety or effectiveness.

Disclaimer

We are constantly striving to improve our

products. Due to this, specifications are subject

to change without notice.

Microframe Corporation

604 S. 12th Street

Broken Arrow, OK 74012

1-800-635-3811

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PRX4SERL Four-Zone Receiver Decoder

Overview

PRX4SERL: Up to four capcode ranges (either alphanumeric or numeric) can be used to latch four

corresponding relays and their respective front panel LEDs. The relays can be globally reset either using a

preset over the air capcode or by depressing the Reset switch. Optional software is available which only

latches the relays for 3 seconds (for 1200 baud TX systems only). Ask our technical sales team for further

details. The PRX4SERL has the added facility of an RS232 serial port, providing a data logging function

(text only). The unit can optionally be configured to send Scope protocol for onward transmission (using a

Scope transmitter on a different frequency).

Power input for both units is 12V dc @ 0.5A, via the blue latching connector provided.

Section 1: Installation

Certain precautions in sighting of the unit apply. As with all radio equipment, attention must be given to

the aerial selected and where the unit is mounted in relation to the transmitter being monitored. If the

unit is to be used with a second transmitter, it should be sited as centrally as possible within the secondary

area to be covered, although it must of course be within adequate distance of the originating transmitter.

The unit should be at least two meters away from any transmitter.

It is therefore essential that adequate signal reception is checked before fitting the unit in the desired

location. Using a Yaesu VR-120D Communications Receiver programmed to the required frequency, a

signal strength of 5 or greater is deemed to be sufficient to provide a reliable consistent link. Readings

below this level may lead to poor reception in adverse atmospheric conditions.

Ranges of up to 1 mile can be achieved, except where signal paths are severely obstructed due to reflections

or physical obstacles in the way. Such conditions may be experienced where there are a large number of

metallic structures around the site, or where the receiver is sited in a hollow, i.e. below the level of the

transmitter or its aerial.

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PRX4SERL Four-Zone Receiver Decoder

To mount the unit on the wall, remove the two screws from the front of the case and separate the cover

from the base plate.

The base plate should be fixed to an even wall surface using suitable screws fitted through the 4.75 mm

holes provided in the chassis plate. Check that the chassis plate does not bend and that the screws do not

snag or pinch any internal cables.

Connect the antenna to the unit via the BNC connector located at the top of the housing. If the antenna is

an external type, care should be taken to ensure that certain installation criteria are met as detailed below.

Some major points to consider when installing equipment:

1. Never install antennae near or adjacent to telephone, public address or data

communication lines or overhead power cables.

2. Avoid, wherever possible, running antenna coax alongside other cables and avoid kinks

and coils. Pre-terminated cable should not be altered.

3. Avoid mounting the receiver in the immediate vicinity of telephone exchanges or computer

equipment.

4. Always use 50 ohm coaxial cable between the antenna and the receiver. If cable runs

exceed 5 meters, always use low loss 50 ohm cable such as RG213 or UR67 to a maximum

of 15 meters.

Coaxial cable intended for TV, Satellite or CCTV installations is normally 75 OHM

and therefore totally unsuitable for any receiver installation manufactured by

Scope.

5. Also remember that the performance of the system will be affected by the type of material

the unit is mounted on and its surroundings.

The following is a list of materials that this receiver will be adversely affected by if

mounted on or if mounted in close proximity to:

a) Foil back plasterboard

b) Metal mesh or wire reinforced glass

c) Metal sheeting, large mirrors or suspended ceilings

d) Lift shafts

All of the above can reduce the ability of the receiver to perform its functions.

6. The circuit boards within this equipment may be harmed by Electrostatic Discharge (ESD).

Installers should ensure that both themselves and the system’s chassis are grounded before

beginning any installation, and should ensure that adequate anti-static procedures are

adhered to at all times.

Warning: Do not use the chassis plate as a template for drilling the holes into the wall. Hammer drills

may irreparably damage the quartz crystals on the printed circuit boards.

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PRX4SERL Four-Zone Receiver Decoder

Fit the required switch cables to the appropriate relays. These are labeled Zone 1 to Zone 4. Terminals are

available on each relay for Normally Open, Normally closed and Common.

Finally, connect the blue latching power connector to a 12V dc @ 0.5A power supply, observing the correct

polarity, as shown in diagram 1.

Where the unit has been ordered as a PRX4SERL with the serial port enabled, the 9 way D connector is

used to connect the unit to a serial printer or PC for data logging purposes, or to a Scope transmitter for a

repeater application. The serial port configuration is 9600 baud, N, 8, 1. A standard serial cable (null

modem) is required.

Operation

PRX4SERL

This unit utilizes firmware which facilitates the following features:

1) There are four configurable capcode ranges which can be specified for activating each relay. Each range

can be specified as either numeric or alphanumeric. Sending a capcode within the set range will latch the

relevant relay and light the corresponding onboard LED.

2) An on-board sounder can be configured to beep every time data is received.

3) Serial output is available on the 9 way D-Connector. This can be specified to output text only (for

connection to a printer or PC), or Scope protocol for onward connection to another Scope transmitter (for

use as a repeater).

4) The receiver will decode POCSAG transmissions sent at 512 baud or 1200 baud (not both). This must

match the transmitter over the air baud rate.

All these features are factory set, so they need to be specified at the time of order placement.

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PRX4SERL Four-Zone Receiver Decoder

Over the air reset: transmitting capcode 0000008 will reset the unit and de-energize all the relays.

Note: where the serial port has been set to output Scope protocol, it must be connected to a valid serial

port for this feature to operate.

The unit can also be reset by depressing SW1 through the hole provided on the lower endplate (see

Diagram 1 below).

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PRX4SERL Four-Zone Receiver Decoder

Specification

Power Input: 12V to 13.8V dc max @ 0.5A

Power Consumption

Standby (relays off, no serial port) 28mA

Standby (relays off, serial port connected) 38mA

Active serial decoder 63mA

Active all relays 250mA

Signal Format POCSAG FSK NRZ (Normal or Inverted)

Frequency (fixed crystal) In the range 440 –470MHz

Frequency Stability +/- 10ppm

Channel Spacing 12.5 or 25KHz

Frequency Deviation +/- 4.5KHz

Over Air Baud Rate (fixed programmable) 512 or 1200 bps

Sensitivity Maximum

512bps 6μV/m

1200bps 7.5μV/m

Selectivity >52dB

Image Rejection >52dB

Spurious Rejection >60dB

Intermodulation >52dB

Relay Contact max rating 0.5A @ 125V ac, 1A @ 60V dc

Serial Port RS232

Serial Configuration N, 8, 1

Serial Port baud rate 9600

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Microframe Corporation

604 S. 12th Street

Broken Arrow, OK 74012

Tel: (918) 258-4839

Toll Free: 1-800-635-3811

Website: www.microframecorp.com

E-mail: [email protected]

Microframe Corporation PRX4SERL Operating instructions

Brand: Microframe Corporation

Model: PRX4SERL

Type: Operating instructions

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Microframe Corporation PRX4SERL Operating instructions

Microframe Corporation PRX4SERL Operating instructions

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